Locking device



FIG. 1 is an upper perspective view of a locking device in accordance with the present invention;

FIG. 2 is a lower perspective view thereof;

FIG. 3 is a side elevation thereof;

FIG. 4 is an opposite side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a lower plan view thereof;

FIG. 7 is an end elevation thereof; and,

FIG. 8 is an opposite end elevation thereof.

The broken lines showing the tabs in FIGS. 1-8 and the surface texture in FIGS. 1 and 5 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for the locking device, as shown and described. 